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Westerly 30
Designer: Denys A. Rayner  ·  Builder: Westerly Marine Ltd. (Uk)  ·  First built: 1966
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About the Westerly 30

A stalwart of British sailing from the 1960s and 70s, the Westerly 30 emerged from Westerly Marine's reputation for building robust, practical cruising yachts designed to handle the unpredictable conditions of UK coastal waters and beyond. Westerly became one of Britain's most beloved production boatbuilders, and the 30 reflects the brand's core philosophy: solid construction, reliable performance, and genuine liveability for cruising couples or small families. Suited primarily to coastal and inshore cruising, the Westerly 30 offers the kind of dependable, confidence-inspiring handling that made Westerly yachts so popular with weekend sailors and those venturing further afield. The design prioritises seaworthiness and stability over outright speed, making it a trustworthy companion in challenging conditions rather than a racing thoroughbred. Below decks, Westerly's trademark attention to practical accommodation means the boat punches above its weight in liveability. For buyers seeking an affordable entry point into bluewater-capable cruising, the Westerly 30 represents a sensible choice with a strong owners community and a long-standing reputation for reliability that continues to attract loyal followers decades after production ended.

Core Dimensions
LOA (Length Overall) 30.16 ft / 9.19 m
LWL (Waterline Length) 25.75 ft / 7.85 m
Beam 8.67 ft / 2.64 m
Max Draft 3.00 ft / 0.91 m
Displacement 7,040.00 lb / 3,193 kg
Ballast 3,100.00 lb / 1,406 kg
Design & Construction
Hull Type Twin Keel
Rigging Type Masthead Sloop
Construction FG
Designer Denys A. Rayner
Builder Westerly Marine Ltd. (UK)
First Built 1966
Last Built 1969
Number Built 39
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Known Issues & What to Watch For

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Performance Ratios
PHRF Rating PHRF (Performance Handicap Racing Fleet) is a national racing handicap measured in seconds per nautical mile. Lower values indicate faster boats. Ratings are sourced from US Sailing's national database (median across 60+ regional fleets).
Under 0 — Ultralight racer0–90 — Performance racer90–150 — Cruiser/racer150–210 — Typical cruiserOver 210 — Heavy/slow cruiser
231
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
44.03
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
184.07
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 4.78 pounds/inch
Rig Dimensions
I (Foretriangle Height) 15.95
P (Mainsail Luff) 365.00 ft² / 33.91 m²
E (Mainsail Foot) Volvo
Engine & Accommodations
Horsepower 15
Fuel Capacity 20 gals / 76 L
Water Capacity 30 gals / 114 L
How It Compares

vs. Ericson 30 1, Pearson 300, Wanderer 30 Pearson

This boat Similar boats
Dimensions
LOA
Westerly 30 ★
30.2 ft
Ericson 30 1
30.3 ft
Pearson 300
30.3 ft
Wanderer 30 Pearson
30.3 ft
LWL
Westerly 30 ★
25.8 ft
Ericson 30 1
23.3 ft
Pearson 300
23.3 ft
Wanderer 30 Pearson
23.3 ft
Beam
Westerly 30 ★
8.7 ft
Ericson 30 1
9.5 ft
Pearson 300
9.3 ft
Wanderer 30 Pearson
9.3 ft
Displacement
Westerly 30 ★
7 lbs
Ericson 30 1
7 lbs
Pearson 300
10 lbs
Wanderer 30 Pearson
9 lbs
Ballast
Westerly 30 ★
3 lbs
Ericson 30 1
3 lbs
Pearson 300
3 lbs
Wanderer 30 Pearson
3 lbs
Sail Area
Westerly 30 ★
Ericson 30 1
410 sq ft
Pearson 300
342 sq ft
Wanderer 30 Pearson
Performance
PHRF Rating (lower = faster)
Westerly 30 ★
231 s/nm
Ericson 30 1
Pearson 300
223 s/nm
Wanderer 30 Pearson
SA / Displacement (higher = more powerful)
Westerly 30 ★
Ericson 30 1
16.7
Pearson 300
11.8
Wanderer 30 Pearson
Ballast / Disp (higher = stiffer)
Westerly 30 ★
44.0 %
Ericson 30 1
Pearson 300
38.0 %
Wanderer 30 Pearson
38.8 %
Comfort Ratio (higher = more comfortable offshore)
Westerly 30 ★
Ericson 30 1
23.7
Pearson 300
31.4
Wanderer 30 Pearson
Capsize Screening (lower = safer)
Westerly 30 ★
Ericson 30 1
1.92
Pearson 300
1.72
Wanderer 30 Pearson
Displacement / Length (lower = lighter)
Westerly 30 ★
184
Ericson 30 1
Pearson 300
351
Wanderer 30 Pearson
344
Hull Speed
Westerly 30 ★
Ericson 30 1
6.5 kts
Pearson 300
6.5 kts
Wanderer 30 Pearson
Speed Number (higher = faster)
Westerly 30 ★
Ericson 30 1
1.9
Pearson 300
1.0
Wanderer 30 Pearson
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